An easy way to bring power to your 3V LEDs.
Made to run our 3 Volt LEDs
This fully assembled unit features
- a coin cell holder suitable for the common cr2032 battery
- Wire leads
- a convenient push-on push-off button switch to turn your item on and off.
We thought this video would help:
Related Items you will need
Shrink Tube - Shrink Tube provides a nice solution for protecting the exposed wire connections. The coin cell holder with switch does not come with Shrink Tube, but you can get some on this product page: Shrink Tube
Add some cr2032 batteries to your order along with the coin cell holder and you will be ready to run as soon as this package arrives. You can find more cr2032 batteries at stores.
In our tests, the premium cr2032 coin cell we ship with our coin cell holder is 200mA and can easily run 1-10 LEDs safely and brightly.
***Solid LEDs need to be separate from any flash or flicker LEDs. Give flash or flicker groups their own coin cell.***
In our tests, 6 lights lasted over 12 hours on one battery. By 12 hours they were noticeably dimmer. A test of the battery at 12 hours showed the voltage was down from 3.0 to 2.6 volts. The lights continued to stay on at a nice level for several additional hours before another battery was needed.
How we connect lights to this unit:
As you can see from this picture, the 3V battery slips right into the holder. And the LEDs are connected red wire to red wire. And black-to-black. Protect connections with tape or use our shrink tube or your own, or use tape.
We have 2 wire lengths on the coin cell holder.
The 8" coin cell holder has 4" red wire either side of the black switch and 8" black wire
The 4" coin cell holder has 2" wire either side of the switch and 4" black wire. It comes with a black switch.
The coin cell holder is .24 inches thick and .9 inches across at the widest point. You can clip the plastic "wings" to save 0.1 inch on the width if space is at a premium!